Free Upgrade And $25 AMEX Gift Card With 3 Day Rental From Dollar

Get a free upgrade when you rent a compact thru full size car for a minimum of three days, plus get a $25 AMEX branded gift card. Offer expires 03/31/08.
To redeem offer, promo code AX25 is required in the reservation.
Upgrade coupon must be presented to the rental counter agent at time of rental- Click here for coupon.
Offer Link- www.dollar.com

Of course you can also take advantage of the triple miles offers at many airlines.

American Airlines/Continental- code DR8S- valid till 05/15/08
Delta Quadruple miles-code dl4-valid till 05/15/08
Look on the dollar website for many more mile offers.